This appears to simply be a "magic item", although there may be very subtle hints at some sort of compulsion to acquire or steal the vessel by those who have experienced its effects.

With this in mind, I have to come right out of the gate and suggest that this really feels like it needs more. There may have been a point in time when simply magical items were enough, but in this day and age, I think most people will agree that something like this just doesn't have enough going on in order to make it over the hump.

Some other notes, in no particular order:

—2 armed security seems a bit much for a mug that doesn't move and doesn't have any 'screw you' properties.

—You may want to remove your "60-day ban on running experiments" and substitute that for something like "will be subject to disciplinary measures". The latter is more in line with the Foundations more firm tone.

—There are several points where you have "mL" for milliliters. This is fine, and I know several men and women of science who use L to avoid confusion with i's or 1's, but I am not sure of any other articles on SCP that measure the same way. This isn't really something you should or have to change, just feedback for the sake of consistency.

I'll reply with more as they become available. In general, your language is good and the article flows fine enough, I am just left wanting more meat.

In general, your language is good and the article flows fine enough, I am just left wanting more meat.

General note, the article uses a different sort of formatting (the "Item #:" section is missing, there is a very short description above the containment, and there are extra addenda that could just be part of the primary sections. It's not necessarily entirely illogical, but it might confuse readers since there's no need to have such a short description at the start and only containment and experimentation after. In fact, this premise might even be more confusing that the standard formatting, since the small bit of description doesn't really cover a lot of the basic anomaly mechanics information introduced in the experimentation stuff, and the containment not coming first just makes it seem all the more over the top and unnecessary).